Q73.Let S be the set of all values of a1 for which the mean deviation about the mean of 100 consecutive positive integers a1, a2, a3, … . , a100 is 25 . Then S is (1) ϕ (2) {99} (3) N (4) {9}
What This Question Tests
This problem involves calculating the mean deviation about the mean for a sequence of consecutive positive integers, requiring knowledge of series sums and properties of absolute values.
Concepts Tested
Formulas Used
Mean (x̄) = Σx_i / n
Mean Deviation about Mean = Σ|x_i - x̄| / n
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📋 Question Details
- Chapter
- Statistics
- Topic
- Mean Deviation about Mean
- Year
- 2023
- Shift
- 30 Jan Shift 2
- Q Number
- Q73
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 15: Statistics
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